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<html>
<head>
  <meta charset="UTF-8">
  <title>core-selector-multi</title>

  <script src="../../platform/platform.js"></script>
  <script src="../../web-component-tester/browser.js"></script>

  <link rel="import" href="../core-selector.html">

  <style>
    .core-selected {
      background: #ccc;
    }
  </style>

</head>
<body>

  <core-selector id="selector" multi>
    <div>Item 1</div>
    <div>Item 2</div>
    <div>Item 3</div>
    <div>Item 4</div>
    <div>Item 5</div>
  </core-selector>

  <script>

    var s = document.querySelector('#selector');

    suite('multi', function() {

      test('honors the multi attribute', function() {
        assert.isTrue(s.multi);
      });

      test('has sane defaults', function() {
        assert.equal(s.selected, null);
        assert.equal(s.selectedClass, 'core-selected');
        assert.equal(s.valueattr, 'name');
        assert.equal(s.items.length, 5);
      });

      test('allows multi-selection', function(done) {
        // setup listener for core-select event
        var selectEventCounter = 0;
        s.addEventListener('core-select', function(e) {
          if (e.detail.isSelected) {
            selectEventCounter++;
          } else {
            selectEventCounter--;
          }
          // check selectedItem in core-select event
          assert.equal(this.selectedItem.length, selectEventCounter);
        });
        // set selected
        s.selected = [0, 2];
        asyncPlatformFlush(function() {
          // check core-select event
          assert.equal(selectEventCounter, 2);
          // check selected class
          assert.isTrue(s.children[0].classList.contains('core-selected'));
          assert.isTrue(s.children[2].classList.contains('core-selected'));
          // check selectedItem
          assert.equal(s.selectedItem.length, 2);
          assert.equal(s.selectedItem[0], s.children[0]);
          assert.equal(s.selectedItem[1], s.children[2]);
          // tap on already selected element should unselect it
          s.children[0].dispatchEvent(new CustomEvent('tap', {bubbles: true}));
          // check selected
          assert.equal(s.selected.length, 1);
          assert.isFalse(s.children[0].classList.contains('core-selected'));
          done();
        });
      });

    });

  </script>

</body>
</html>
